Roving, spinning, or analogous machine.



A n .S u o G .o MN BA .B Ao .6, Tm N m DI s s, m v o R (Application led Nov. 30, 1800.)

(No Ilodel.)

INVENTOR KBOYD WITNESSES:

Q/Y'UWd/MM HIS ATTORNEYS.

Ynr: mms Pcrzns co. Pnofufnn.. WASHINGTON, D. s;

. UNITED 'STATES PATENT OFFICE.

THOMAS A. BOYD, OF GLASGOW, SCOTLAND.

ROVING, SPINNING, OR ANALOGOUS MACHINE.

SPECIFICATION forming part of Letters Patent No. 680,017, dated August 6, 1901.

Application filed November 30, 1900. Serial No. 38,215. (No model.)

To all whom t may concern:

Be it known that I, THOMAS ALEXANDER BOYD, a subject of the Queen of Great Britain and Ireland,and a resident of Glasgow, Scotland, have invented Improvements in Roving, Spinning, or Analogus Machines, of which the following is a specification.`

My invention relates to improved means ot' supporting the draft-rollers and of regulating the pressure on the front draft-rollers in roving, spinning, and analogous machinery.

In the accompanying drawings, Figure -1 shows end view, and Fig. 2 plan, of draft arrangement and means of pressing the front draft-rollers. Fig. 3 shows front View of same; Fig. 4,. plan View of wire reve-carrier.

On spinning-frames for certain kinds of work it is necessary to vary the amount of pressure put upon the front feed-rollers to suit the particular fibers of yarns which may be spun. At present the adjustment of the various feed-rollers on a spinning-frame is made upon pairs of rollers, and consequently dierent pairs are liable to vary in their adjustment. With the view of securing greater regularity in thisadjustment I regulate the pressure throughout the whole frame or throughout considerable sections of it at one time, and, further, I relieve the rollers of their pressure or most of it when I stop the frame, so as to prevent damage to the yarn being spun and to the rollers themselves. My invention also includes improvements in the construction ofthe details for supporting and pressing feed-rollers such as are referred to. At present the feed-rollers are carried in many cases on brackets resting in an inclined position on the top of the spinning-frame. The upper ends are bolted to a top central rail, and the lower and outer ends are bolted to longitudinal rails. From various causes thelower ends get loose and slide outward, thus altering the alinement of the feed-rollers.

In carrying out my invention in one arrangement I construct the supports for the feed-rollers 1 on the two sides of a frame by using a horizontal member 2 and two diagonal members 3 3, which together form a triangular bracket 4, the rollerbearings 4 being adjustably fixed on the two outer sides of the triangle. The framing of the spinningframe has two main rails 5 5, one at each side and running parallel with each other from end to end ofthe frame. On the tops of these rails I place at suitable intervals the triangular brackets 4 describedand upon these brackets the various lines of drawing` or feed rollers are placed in bearings. Along the apex of the triangular brackets 4 I carry a bar 6, to which they are fixed. At the lower and outer ends of the triangular brackets 4, below and behind the under feed-rollers, I fix a rail 7 7 on each side of the frame and running the whole length of it. Upon these rails I fulcrum levers 8, which are connected by links 8', one to each roller-spindle l0, carrying a pair of upper feed-rollers 10. These levers 8 project from the rails 7 7 on each both sides toward the center of the frame, and to the ends of those levers I apply a connection, with a bar passing from end to end of the frame. I prefer to place between each of the triangular brackets 4, below the pressure-lever 8 on both sides of the frame, swing-levers 9, centered on studs parallel with thefeed-rollers. I connect the pressure-levers 8 each by means of an adjustable spiral spring 82 to the swinglevers 9, each of which as a rule has four of those levers attached to it. From end to end of the framing I carry a horizontal bar 1I, and on this bar I tix cams 12, with an inclined face looking downward. Each swing-lever 9 has a projection 9', passing to the under side of the cams. When the horizontal bar ll is moved endwise in one direction, it depresses all the swing-levers 9 by means of the cams 12, and the swing-levers 9 draw the pressure -levers 8 downward, thereby pressing the top front feed-rollers lO' on the lower rollers l, and when the horizontal bar 1l is moved in the opposite direction the levers 9 are allowed to rise and lessen the pressure. At the end of the spinning-frame I place a screw 13 and hand-wheel 14 to move the horizontal bar 1l endwise one way or the other. I place an adjustable stopper l5 to regulate the extent of the movement of the horizontal bar, and through it the pressure on the feed-rollers throughout the frame is regulated.

I place on the racks 3 of a spinning-frame brackets 3', having projections in which are IOO carried shafts 16, with pnions 17 gearing in The teeth of the rack 3. On the bracket 15 I mounta bar 18, passing from end to end of the frame. This bar has a traverse motion applied to it, which gives it a short to-audfro movement endwise. On the bar I iX awire 19, placed at the level of the top of the front and back rollers and at or about right angles t0 them. The wire 19 behind the front roller l has a short bend 1.9' at right angles. At its inner or back end 192 it is bent downward, so that it can be secured to the traversing bar 18 withoutthe fixing-screw interfering with the upper part of the wire 19. The rove 198 is delivered upby the back roller 20, then passed around the wire 19 spirally, andvcarried through between the frontunder roller 1 and its top roller 10.

` lt'will thus be understood that the rove 193 is supported by the wire 19 as it passes from the back to the front roller. The absence of the intermediate rollers allows the back and front rollers to be brought much closer t0- getlier for certain classes of work, while the carrying ot' the rove on a wire 19 enables i-t to be supported much closer to the nip of the front roller l than if au intermediate roller orV rollers were used. In this way veryshort fibers can' be spun with larger top and under rollers than otherwise could be used. Dierent lengths and diameters of wires can of course be used for different kinds of yarns. The bend 19 at the front end of the Wire 19 prevents the coils of the rove 193 from getting o the wire 19. The traverse given to the bar 18, which carries the wires 19, prevents wearing of the draft-rollers.

Having now particularly ascertained and described my invention and in what manner' the same is to be performed, I declare that what I claim is- Y l. Roving, spinning and analogous Inachinery provided with means for regulating the pressure on the front feed-rollers throughout a section of or throughout the whole of the frame for the purposes stated.

2. In roving, spinning and analogous machinery, the combination of a main frame, feed-rollers and means for applying pressure t0 the front feed-rollers, with supports for the feed-rollers on both sides of the frame, said supports comprising a horizontal and two diagonal members forming a triangle so as to resist the pressure put upon the front feed-rollers, substantially as described.

3. In roving, spinning and analogous machinery, the combination of levers fulcru med on the framingand extending toward the center of the frame with a 'bar extending from end to end of the frame which bar operates the Whole of the pressure-levers, substantially as and for the purposes described.

4. In roving, spinning Aand analogous machinery, the combination cfa pair of feedrollers, a link acting on one of the rollers and a 'pressure-lever to which the link is connected, with a swing-lever having a spring connection with the press ure-lever and a horital bar provided with cams to act on the pressure-lever, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ir. A. BOYD.

Witnesses:

THOMAS BLAIR, CHARLES WILSON. 

